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basic java program to Concatenate string using for Loop

/* Write a program to Concatenate  string using for Loop

          Input - 5
          Output - 1 2 3 4 5 */
class Join{
      public static void main(String args[]){
      int num = Integer.parseInt(args[0]);
      String result = " ";
      for(int i=1;i<=num;i++){
           result = result + i + " ";
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